A: We recommend you continue to advise them, encouraging them to obey Allah and His Messenger, warning them against sins and reciting Ayahs (Qur'anic verses) and Hadith to them that are related to their actions, along with asking Allah (may He be Glorified) to guide them at the times when Du`a' (supplication) is most likely to be accepted.
If some of your relatives or scholars can help you in this matter, this is best as they are more likely to accept advice and be guided. Allah (may He be Glorified) states: Help you one another in Al-Birr and At-Taqwâ (virtue, righteousness and piety) and By Al-‘Asr (the time). Verily, man is in loss, Except those who believe (in Islâmic Monotheism) and do righteous good deeds, and recommend one another to the truth [i.e. order one another to perform all kinds of good deeds (Al-Ma‘ruf) which Allâh has ordained, and abstain from all kinds of sins and evil deeds (Al-Munkar) which Allâh has forbidden], and recommend one another to patience (for the sufferings, harms, and injuries which one may encounter in Allâh’s Cause during preaching His religion of Islâmic Monotheism or Jihâd). He (may He be Glorified) also states: O you who believe! Ward off yourselves and your families against a Fire (Hell) whose fuel is men and stones The Prophet (peace be upon) stated: Religion is based on advising one another. Upon this it was said: For whom? He replied: For Allah, His Book, His Messenger and for the leaders and the general Muslims. (Related by Muslim in his Sahih (authentic) Book of Hadith)
and “Whoever among you sees an evil action, let him change it by his hand (by action), and if he cannot, then by his tongue (by speaking out), and if he cannot, then by his heart (by hating it and feeling that it is wrong), and that is the weakest of faith.” (Related by Muslim in his Sahih Book of Hadith)The Prophet (peace be upon him) also stated: The similitude of believers in regard to mutual love, affection, fellow-feeling is that of one body; when any limb of it aches, the whole body aches, because of sleeplessness and fever. (Agreed upon by Imams Al-Bukhari and Muslim)There are numerous many Ayahs and Hadiths to the same effect.
May Allah help you do all good and set right the affairs of all!